Curtain threader



FIG. 1 is a front elevation view of a curtain threader, showing my new design;

FIG. 2 is a bottom elevation view thereof;

FIG. 3 is a top elevation view thereof;

FIG. 4 is a lateral elevation view (right side) thereof;

FIG. 5 is a lateral elevation view (left side) thereof;

FIG. 6 is a back elevation view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a back perspective view thereof. 

CLAIM The ornamental design for a curtain threader, as shown and described. 